Thermoelectric transport in Weyl semimetals under a uniform concentration of torsional dislocations.

Nanoscale Adv

Facultad de Física, Pontificia Universidad Católica de Chile Vicuña Mackenna 4860 Santiago Chile

Published: May 2024

In this article, we present an effective continuum model for a Weyl semimetal, to calculate its thermal and thermoelectric transport coefficients in the presence of a uniform concentration of torsional dislocations. We model each dislocation as a cylindrical region of finite radius , where the corresponding elastic strain is described as a gauge field leading to a local pseudo-magnetic field. The transport coefficients are obtained by a combination of scattering theory, Green's functions and the Kubo formulae in the linear response regime. We applied our theoretical results to predict the electrical and thermal conductivities as well as the Seebeck coefficient for several transition metal monopnictides, TaAs, TaP, NbAs and NbP.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11093277PMC
http://dx.doi.org/10.1039/d4na00056kDOI Listing

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